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THE BELL SYSTEM APPROACH TO THE ECOLOGY OF SPECTRUM

The problem of a shortage of radio spectrum is getting more acute every year. And it won't go away by itself. If the current volume of commercial and recreational vessels equipped with radio-telephones continues to increase there will be a total of approximately 9 million vessels equipped with radiotelephones by 1980. The Bell System has attempted to help remedy this problem and develop a practical and workable program for implementation of the proposed plan. This paper describes in some detail the Marine Identification Number Plan.